Hi, I would like to kwnow the way to change color or to do appear the headline on scroll. It's OK for changing logo size and color of sticky header but i don't see how to change the color of my site...

The header of my template is sticky for desktop view, on mobile it's not. In the different sections on my page, I made joomla positions to add text. I also added the link-anchors. In the menu, I...